Duplicated day abbreviations (i.e. M, T, W, T, F)#63

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jyonker wants to merge 1 commit intoadamalbrecht:masterfrom jyonker:duplicate_day_abbreviations

+31-5

Commits on Jul 11, 2014

Added ability to use duplicated day abbreviations (i.e. M, T, W, T, F). Added tests around day abbreviations.
Jon Yonker
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